B3311331313231311331322331333131133132313131133133313232233132211   >>    B331133131323131133132233133313113313231313113313331323223313221   <<    B3311331313231311331322331333131133132313131133133313232233132213   >>      B3311331313231311331322331333131133132313131133133313232233132212   >>